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Schmied C, Nelson MS, Avilov S, Bakker GJ, Bertocchi C, Bischof J, Boehm U, Brocher J, Carvalho MT, Chiritescu C, Christopher J, Cimini BA, Conde-Sousa E, Ebner M, Ecker R, Eliceiri K, Fernandez-Rodriguez J, Gaudreault N, Gelman L, Grunwald D, Gu T, Halidi N, Hammer M, Hartley M, Held M, Jug F, Kapoor V, Koksoy AA, Lacoste J, Le Dévédec S, Le Guyader S, Liu P, Martins GG, Mathur A, Miura K, Montero Llopis P, Nitschke R, North A, Parslow AC, Payne-Dwyer A, Plantard L, Ali R, Schroth-Diez B, Schütz L, Scott RT, Seitz A, Selchow O, Sharma VP, Spitaler M, Srinivasan S, Strambio-De-Castillia C, Taatjes D, Tischer C, Jambor HK. Community-developed checklists for publishing images and image analyses. Nat Methods 2024; 21:170-181. [PMID: 37710020 PMCID: PMC10922596 DOI: 10.1038/s41592-023-01987-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 07/26/2023] [Indexed: 09/16/2023]
Abstract
Images document scientific discoveries and are prevalent in modern biomedical research. Microscopy imaging in particular is currently undergoing rapid technological advancements. However, for scientists wishing to publish obtained images and image-analysis results, there are currently no unified guidelines for best practices. Consequently, microscopy images and image data in publications may be unclear or difficult to interpret. Here, we present community-developed checklists for preparing light microscopy images and describing image analyses for publications. These checklists offer authors, readers and publishers key recommendations for image formatting and annotation, color selection, data availability and reporting image-analysis workflows. The goal of our guidelines is to increase the clarity and reproducibility of image figures and thereby to heighten the quality and explanatory power of microscopy data.
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Affiliation(s)
- Christopher Schmied
- Fondazione Human Technopole, Milano, Italy.
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany.
| | - Michael S Nelson
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Sergiy Avilov
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Gert-Jan Bakker
- Medical BioSciences Department, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Cristina Bertocchi
- Laboratory for Molecular Mechanics of Cell Adhesions, Pontificia Universidad Católica de Chile Santiago, Santiago de Chile, Chile
- Graduate School of Engineering Science, Osaka University, Osaka, Japan
| | | | | | - Jan Brocher
- Scientific Image Processing and Analysis, BioVoxxel, Ludwigshafen, Germany
| | - Mariana T Carvalho
- Nanophotonics and BioImaging Facility at INL, International Iberian Nanotechnology Laboratory, Braga, Portugal
| | | | - Jana Christopher
- Biochemistry Center Heidelberg, Heidelberg University, Heidelberg, Germany
| | - Beth A Cimini
- Imaging Platform, Broad Institute, Cambridge, MA, USA
| | - Eduardo Conde-Sousa
- i3S, Instituto de Investigação e Inovação Em Saúde and INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Michael Ebner
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany
| | - Rupert Ecker
- Translational Research Institute, Queensland University of Technology, Woolloongabba, Queensland, Australia
- School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
- TissueGnostics GmbH, Vienna, Austria
| | - Kevin Eliceiri
- Department of Medical Physics and Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Julia Fernandez-Rodriguez
- Centre for Cellular Imaging Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | | | - Laurent Gelman
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - David Grunwald
- RNA Therapeutics Institute, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | | | - Nadia Halidi
- Advanced Light Microscopy Unit, Centre for Genomic Regulation, Barcelona, Spain
| | - Mathias Hammer
- RNA Therapeutics Institute, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Matthew Hartley
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Hinxton, UK
| | - Marie Held
- Centre for Cell Imaging, the University of Liverpool, Liverpool, UK
| | | | - Varun Kapoor
- Department of AI Research, Kapoor Labs, Paris, France
| | | | | | - Sylvia Le Dévédec
- Division of Drug Discovery and Safety, Cell Observatory, Leiden Academic Centre for Drug Research, Leiden University, Leiden, the Netherlands
| | | | - Penghuan Liu
- Key Laboratory for Modern Measurement Technology and Instruments of Zhejiang Province, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, China
| | - Gabriel G Martins
- Advanced Imaging Facility, Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | | | - Kota Miura
- Bioimage Analysis and Research, Heidelberg, Germany
| | | | - Roland Nitschke
- Life Imaging Center, Signalling Research Centres CIBSS and BIOSS, University of Freiburg, Freiburg, Germany
| | - Alison North
- Bio-Imaging Resource Center, the Rockefeller University, New York, NY, USA
| | - Adam C Parslow
- Baker Institute Microscopy Platform, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Alex Payne-Dwyer
- School of Physics, Engineering and Technology, University of York, Heslington, UK
| | - Laure Plantard
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - Rizwan Ali
- King Abdullah International Medical Research Center (KAIMRC), Medical Research Core Facility and Platforms (MRCFP), King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Britta Schroth-Diez
- Light Microscopy Facility, Max Planck Institute of Molecular Cell Biology and Genetics Dresden, Dresden, Germany
| | | | - Ryan T Scott
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, USA
| | - Arne Seitz
- BioImaging and Optics Platform, Faculty of Life Sciences (SV), École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Olaf Selchow
- Microscopy and BioImaging Consulting, Image Processing and Large Data Handling, Gera, Germany
| | - Ved P Sharma
- Bio-Imaging Resource Center, the Rockefeller University, New York, NY, USA
| | | | - Sathya Srinivasan
- Imaging and Morphology Support Core, Oregon National Primate Research Center, OHSU West Campus, Beaverton, OR, USA
| | | | - Douglas Taatjes
- Department of Pathology and Laboratory Medicine, Microscopy Imaging Center, Center for Biomedical Shared Resources, University of Vermont, Burlington, VT, USA
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Park H, Li B, Liu Y, Nelson MS, Wilson HM, Sifakis E, Eliceiri KW. Collagen fiber centerline tracking in fibrotic tissue via deep neural networks with variational autoencoder-based synthetic training data generation. Med Image Anal 2023; 90:102961. [PMID: 37802011 PMCID: PMC10591913 DOI: 10.1016/j.media.2023.102961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 10/08/2023]
Abstract
The role of fibrillar collagen in the tissue microenvironment is critical in disease contexts ranging from cancers to chronic inflammations, as evidenced by many studies. Quantifying fibrillar collagen organization has become a powerful approach for characterizing the topology of collagen fibers and studying the role of collagen fibers in disease progression. We present a deep learning-based pipeline to quantify collagen fibers' topological properties in microscopy-based collagen images from pathological tissue samples. Our method leverages deep neural networks to extract collagen fiber centerlines and deep generative models to create synthetic training data, addressing the current shortage of large-scale annotations. As a part of this effort, we have created and annotated a collagen fiber centerline dataset, with the hope of facilitating further research in this field. Quantitative measurements such as fiber orientation, alignment, density, and length can be derived based on the centerline extraction results. Our pipeline comprises three stages. Initially, a variational autoencoder is trained to generate synthetic centerlines possessing controllable topological properties. Subsequently, a conditional generative adversarial network synthesizes realistic collagen fiber images from the synthetic centerlines, yielding a synthetic training set of image-centerline pairs. Finally, we train a collagen fiber centerline extraction network using both the original and synthetic data. Evaluation using collagen fiber images from pancreas, liver, and breast cancer samples collected via second-harmonic generation microscopy demonstrates our pipeline's superiority over several popular fiber centerline extraction tools. Incorporating synthetic data into training further enhances the network's generalizability. Our code is available at https://github.com/uw-loci/collagen-fiber-metrics.
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Affiliation(s)
- Hyojoon Park
- Department of Computer Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA; Laboratory for Optical and Computational Instrumentation, University of Wisconsin-Madison, Madison, WI 53706, USA; Morgridge Institute for Research, Madison, WI 53706, USA.
| | - Bin Li
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; Laboratory for Optical and Computational Instrumentation, University of Wisconsin-Madison, Madison, WI 53706, USA; Morgridge Institute for Research, Madison, WI 53706, USA.
| | - Yuming Liu
- Laboratory for Optical and Computational Instrumentation, University of Wisconsin-Madison, Madison, WI 53706, USA.
| | - Michael S Nelson
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; Laboratory for Optical and Computational Instrumentation, University of Wisconsin-Madison, Madison, WI 53706, USA.
| | - Helen M Wilson
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; Laboratory for Optical and Computational Instrumentation, University of Wisconsin-Madison, Madison, WI 53706, USA.
| | - Eftychios Sifakis
- Department of Computer Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA.
| | - Kevin W Eliceiri
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; Laboratory for Optical and Computational Instrumentation, University of Wisconsin-Madison, Madison, WI 53706, USA; Morgridge Institute for Research, Madison, WI 53706, USA.
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3
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Schmied C, Nelson MS, Avilov S, Bakker GJ, Bertocchi C, Bischof J, Boehm U, Brocher J, Carvalho M, Chiritescu C, Christopher J, Cimini BA, Conde-Sousa E, Ebner M, Ecker R, Eliceiri K, Fernandez-Rodriguez J, Gaudreault N, Gelman L, Grunwald D, Gu T, Halidi N, Hammer M, Hartley M, Held M, Jug F, Kapoor V, Koksoy AA, Lacoste J, Dévédec SL, Guyader SL, Liu P, Martins GG, Mathur A, Miura K, Montero Llopis P, Nitschke R, North A, Parslow AC, Payne-Dwyer A, Plantard L, Ali R, Schroth-Diez B, Schütz L, Scott RT, Seitz A, Selchow O, Sharma VP, Spitaler M, Srinivasan S, Strambio-De-Castillia C, Taatjes D, Tischer C, Jambor HK. Community-developed checklists for publishing images and image analyses. ArXiv 2023:arXiv:2302.07005v2. [PMID: 36824427 PMCID: PMC9949169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Images document scientific discoveries and are prevalent in modern biomedical research. Microscopy imaging in particular is currently undergoing rapid technological advancements. However for scientists wishing to publish the obtained images and image analyses results, there are to date no unified guidelines. Consequently, microscopy images and image data in publications may be unclear or difficult to interpret. Here we present community-developed checklists for preparing light microscopy images and image analysis for publications. These checklists offer authors, readers, and publishers key recommendations for image formatting and annotation, color selection, data availability, and for reporting image analysis workflows. The goal of our guidelines is to increase the clarity and reproducibility of image figures and thereby heighten the quality and explanatory power of microscopy data is in publications.
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Affiliation(s)
- Christopher Schmied
- Fondazione Human Technopole, Viale Rita Levi-Montalcini 1, 20157 Milano, Italy
- Present address: Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, 13125 Berlin, Germany
| | - Michael S Nelson
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Sergiy Avilov
- Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany
| | - Gert-Jan Bakker
- Medical BioSciences department, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Cristina Bertocchi
- Laboratory for Molecular mechanics of cell adhesions, Pontificia Universidad Católica de Chile Santiago
- Osaka University, Graduate School of Engineering Science, Japan
| | - Johanna Bischof
- Euro-BioImaging ERIC, Bio-Hub, Meyerhofstr. 1, 69117 Heidelberg, Germany
| | - Ulrike Boehm
- Carl Zeiss AG, Carl-Zeiss-Straße 22, 73447 Oberkochen, Germany
| | - Jan Brocher
- BioVoxxel, Scientific Image Processing and Analysis, Eugen-Roth-Strasse 8, 67071 Ludwigshafen, Germany
| | - Mariana Carvalho
- Nanophotonics and BioImaging Facility at INL, International Iberian Nanotechnology Laboratory, 4715-330, Portugal
| | | | | | - Beth A Cimini
- Imaging Platform, Broad Institute, Cambridge, MA 02142
| | - Eduardo Conde-Sousa
- i3S, Instituto de Investigação e Inovação Em Saúde and INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Michael Ebner
- Fondazione Human Technopole, Viale Rita Levi-Montalcini 1, 20157 Milano, Italy
| | - Rupert Ecker
- Translational Research Institute, Queensland University of Technology, 37 Kent Street, Woolloongabba, QLD 4102, Australia
- School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, QLD 4059, Australia
- TissueGnostics GmbH, 1020 Vienna, Austria
| | - Kevin Eliceiri
- Department of Medical Physics and Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | | | | | - Laurent Gelman
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - David Grunwald
- RNA Therapeutics Institute, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | | | - Nadia Halidi
- Advanced Light Microscopy Unit, Centre for Genomic Regulation, Barcelona, Spain
| | - Mathias Hammer
- RNA Therapeutics Institute, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Matthew Hartley
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Hinxton, UK
| | - Marie Held
- Centre for Cell Imaging, The University of Liverpool, UK
| | - Florian Jug
- Fondazione Human Technopole, Viale Rita Levi-Montalcini 1, 20157 Milano, Italy
| | - Varun Kapoor
- Department of AI research, Kapoor Labs, Paris, 75005, France
| | | | | | - Sylvia Le Dévédec
- Division of Drug Discovery and Safety, Cell Observatory, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands
| | | | - Penghuan Liu
- Key Laboratory for Modern Measurement Technology and Instruments of Zhejiang Province, College of Optical and Electronic Technology, China Jiliang University, Hangzhou, China
| | - Gabriel G Martins
- Advanced Imaging Facility, Instituto Gulbenkian de Ciência, Oeiras 2780-156 - Portugal
| | - Aastha Mathur
- Euro-BioImaging ERIC, Bio-Hub, Meyerhofstr. 1, 69117 Heidelberg, Germany
| | - Kota Miura
- Bioimage Analysis & Research, 69127 Heidelberg/Germany
| | | | - Roland Nitschke
- Life Imaging Center, Signalling Research Centres CIBSS and BIOSS, University of Freiburg, Germany
| | - Alison North
- Bio-Imaging Resource Center, The Rockefeller University, New York, NY USA
| | - Adam C Parslow
- Baker Institute Microscopy Platform, Baker Heart and Diabetes Institute, Melbourne, VIC, 3004, Australia
| | - Alex Payne-Dwyer
- School of Physics, Engineering and Technology, University of York, Heslington, YO10 5DD, UK
| | - Laure Plantard
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - Rizwan Ali
- King Abdullah International Medical Research Center (KAIMRC), Medical Research Core Facility and Platforms (MRCFP), King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Ministry of National Guard Health Affairs (MNGHA), Riyadh 11481, Saudi Arabia
| | - Britta Schroth-Diez
- Light Microscopy Facility, Max Planck Institute of Molecular Cell Biology and Genetics Dresden, Pfotenhauerstrasse 108, 01307 Dresden, Germany
| | - Lucas Schütz
- ariadne.ai (Germany) GmbH, 69115 Heidelberg, Germany
| | - Ryan T Scott
- Space Biosciences Division, NASA Ames Research Center, Moffett Field, CA, 94035, USA
| | - Arne Seitz
- BioImaging & Optics Platform (BIOP), Ecole Polytechnique Fédérale de Lausanne (EPFL), Faculty of Life sciences (SV), CH-1015 Lausanne
| | - Olaf Selchow
- Microscopy & BioImaging Consulting, Image Processing & Large Data Handling, Tobias-Hoppe-Strassse 3, 07548 Gera, Germany
| | - Ved P Sharma
- Bio-Imaging Resource Center, The Rockefeller University, New York, NY USA
| | - Martin Spitaler
- Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152 Martinsried, Germany
| | - Sathya Srinivasan
- Imaging and Morphology Support Core, Oregon National Primate Research Center - (ONPRC - OHSU West Campus), Beaverton, Oregon 97006, USA
| | | | - Douglas Taatjes
- Department of Pathology and Laboratory Medicine, Microscopy Imaging Center (RRID# SCR_018821), Center for Biomedical Shared Resources, University of Vermont, Burlington, VT 05405 USA
| | - Christian Tischer
- Centre for Bioimage Analysis, EMBL Heidelberg, Meyerhofstr. 1, 69117 Heidelberg, Germany
| | - Helena Klara Jambor
- NCT-UCC, Medizinische Fakultät TU Dresden, Fetscherstrasse 105, 01307 Dresden/Germany
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Tixi W, Maldonado M, Chang YT, Chiu A, Yeung W, Parveen N, Nelson MS, Hart R, Wang S, Hsu WJ, Fueger P, Kopp JL, Huising MO, Dhawan S, Shih HP. Coordination between ECM and cell-cell adhesion regulates the development of islet aggregation, architecture, and functional maturation. eLife 2023; 12:e90006. [PMID: 37610090 PMCID: PMC10482429 DOI: 10.7554/elife.90006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 07/12/2023] [Indexed: 08/24/2023] Open
Abstract
Pancreatic islets are three-dimensional cell aggregates consisting of unique cellular composition, cell-to-cell contacts, and interactions with blood vessels. Cell aggregation is essential for islet endocrine function; however, it remains unclear how developing islets establish aggregation. By combining genetic animal models, imaging tools, and gene expression profiling, we demonstrate that islet aggregation is regulated by extracellular matrix signaling and cell-cell adhesion. Islet endocrine cell-specific inactivation of extracellular matrix receptor integrin β1 disrupted blood vessel interactions but promoted cell-cell adhesion and the formation of larger islets. In contrast, ablation of cell-cell adhesion molecule α-catenin promoted blood vessel interactions yet compromised islet clustering. Simultaneous removal of integrin β1 and α-catenin disrupts islet aggregation and the endocrine cell maturation process, demonstrating that establishment of islet aggregates is essential for functional maturation. Our study provides new insights into understanding the fundamental self-organizing mechanism for islet aggregation, architecture, and functional maturation.
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Affiliation(s)
- Wilma Tixi
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
| | - Maricela Maldonado
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
- Department of Biomedical Engineering, College of Engineering, California State University, Long BeachLong BeachUnited States
| | - Ya-Ting Chang
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
| | - Amy Chiu
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
| | - Wilson Yeung
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
| | - Nazia Parveen
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
| | - Michael S Nelson
- Light Microscopy Core, Beckman Research Institute, City of HopeDuarteUnited States
| | - Ryan Hart
- Department of Neurobiology, Physiology and Behavior, University of California, DavisDavisUnited States
| | - Shihao Wang
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British ColumbiaVancouverCanada
| | - Wu Jih Hsu
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British ColumbiaVancouverCanada
| | - Patrick Fueger
- Department of Molecular & Cellular Endocrinology, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
| | - Janel L Kopp
- Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British ColumbiaVancouverCanada
| | - Mark O Huising
- Department of Neurobiology, Physiology and Behavior, University of California, DavisDavisUnited States
- Department of Physiology and Membrane Biology, School of Medicine, University of California, DavisDavisUnited States
| | - Sangeeta Dhawan
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
| | - Hung Ping Shih
- Department of Translational Research and Cellular Therapeutics, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of HopeDuarteUnited States
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Munabi NCO, Nelson MS, Francis SH. Risk Factors for Delayed Diagnosis of Positional Plagiocephaly: A Review of 25,322 Patients. Cleft Palate Craniofac J 2023:10556656231179068. [PMID: 37248557 DOI: 10.1177/10556656231179068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
OBJECTIVE This study identifies risk factors for late positional plagiocephaly (PP) diagnosis and impact on helmet therapy. DESIGN We conducted a retrospective review of all patients diagnosed with PP over 10 years at five Southern California hospitals. SETTING Patients diagnosed with PP at an included hospital. PATIENTS 25,332 patients were diagnosed with PP over 10 years. INTERVENTIONS Patients diagnosed with PP early (< = 6 months) and late (>6 months) were compared. MAIN OUTCOME MEASURES Cohorts were evaluated for demographics, gestational history, associated conditions, and hospitalizations through direct comparison, logistic regression, and correlation analyses. Rates of referrals and helmet orders were compared. RESULTS Of patients reviewed, 4.8% (n = 1216) were diagnosed late. On multivariate analysis, late diagnoses were more likely Hispanic or Black/African-American. Early gestational age, hydrocephalus, and VP shunt were more frequent in late diagnoses. Patients diagnosed late had longer NICU and overall hospital stays. Earlier gestational age, longer NICU or overall hospital stay correlated with later age at PP diagnosis. 8.9% of patients were referred for helmet therapy evaluation. Patients diagnosed late were 2.63 and 1.64 times as likely to be referred and require helmet therapy, respectively. CONCLUSIONS Patients who are Hispanic or Black/African-American, premature, have hydrocephalus, or VP shunt have higher rates of delayed PP diagnosis. Shorter gestational age or longer NICU or hospital stay correlates with later diagnosis, which increases helmet therapy requirements. Additional interventions are needed for at risk patients to routinely evaluate for and minimize the risk of developing PP.
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Affiliation(s)
- Naikhoba C O Munabi
- Division of Plastic and Reconstructive Surgery, Keck School of Medicine of USC, Los Angeles, CA, USA
| | - Michael S Nelson
- Department of Pediatrics, Southern California Permanente Medical Group, San Diego, CA, USA
| | - Stacey H Francis
- Division of Plastic and Reconstructive Surgery, Keck School of Medicine of USC, Los Angeles, CA, USA
- Department of Plastic and Reconstructive Surgery, Southern California Permanente Medical Group, Los Angeles, CA, USA
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6
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van Tienhoven R, Kracht MJL, van der Slik AR, Thomaidou S, Wolters AHG, Giepmans BNG, Riojas JPR, Nelson MS, Carlotti F, de Koning EJP, Hoeben RC, Zaldumbide A, Roep BO. Presence of immunogenic alternatively spliced insulin gene product in human pancreatic delta cells. Diabetologia 2023; 66:884-896. [PMID: 36884057 PMCID: PMC10036285 DOI: 10.1007/s00125-023-05882-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 12/23/2022] [Indexed: 03/09/2023]
Abstract
AIMS/HYPOTHESIS Transcriptome analyses revealed insulin-gene-derived transcripts in non-beta endocrine islet cells. We studied alternative splicing of human INS mRNA in pancreatic islets. METHODS Alternative splicing of insulin pre-mRNA was determined by PCR analysis performed on human islet RNA and single-cell RNA-seq analysis. Antisera were generated to detect insulin variants in human pancreatic tissue using immunohistochemistry, electron microscopy and single-cell western blot to confirm the expression of insulin variants. Cytotoxic T lymphocyte (CTL) activation was determined by MIP-1β release. RESULTS We identified an alternatively spliced INS product. This variant encodes the complete insulin signal peptide and B chain and an alternative C-terminus that largely overlaps with a previously identified defective ribosomal product of INS. Immunohistochemical analysis revealed that the translation product of this INS-derived splice transcript was detectable in somatostatin-producing delta cells but not in beta cells; this was confirmed by light and electron microscopy. Expression of this alternatively spliced INS product activated preproinsulin-specific CTLs in vitro. The exclusive presence of this alternatively spliced INS product in delta cells may be explained by its clearance from beta cells by insulin-degrading enzyme capturing its insulin B chain fragment and a lack of insulin-degrading enzyme expression in delta cells. CONCLUSIONS/INTERPRETATION Our data demonstrate that delta cells can express an INS product derived from alternative splicing, containing both the diabetogenic insulin signal peptide and B chain, in their secretory granules. We propose that this alternative INS product may play a role in islet autoimmunity and pathology, as well as endocrine or paracrine function or islet development and endocrine destiny, and transdifferentiation between endocrine cells. INS promoter activity is not confined to beta cells and should be used with care when assigning beta cell identity and selectivity. DATA AVAILABILITY The full EM dataset is available via www.nanotomy.org (for review: http://www.nanotomy.org/OA/Tienhoven2021SUB/6126-368/ ). Single-cell RNA-seq data was made available by Segerstolpe et al [13] and can be found at https://sandberglab.se/pancreas . The RNA and protein sequence of INS-splice was uploaded to GenBank (BankIt2546444 INS-splice OM489474).
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Affiliation(s)
- René van Tienhoven
- Department of Diabetes and Cancer Discovery Science, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA, USA
| | - Maria J L Kracht
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Arno R van der Slik
- Department of Immunology, Leiden University Medical Center, Leiden, the Netherlands
| | - Sofia Thomaidou
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Anouk H G Wolters
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Ben N G Giepmans
- Department of Biomedical Sciences of Cells and Systems, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | | | - Michael S Nelson
- Light Microscopy Core, City of Hope National Medical Center, Duarte, CA, USA
| | - Françoise Carlotti
- Department of Internal Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - Eelco J P de Koning
- Department of Internal Medicine, Leiden University Medical Center, Leiden, the Netherlands
| | - Rob C Hoeben
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Arnaud Zaldumbide
- Department of Cell and Chemical Biology, Leiden University Medical Center, Leiden, the Netherlands
| | - Bart O Roep
- Department of Internal Medicine, Leiden University Medical Center, Leiden, the Netherlands.
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7
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Li B, Nelson MS, Chacko JV, Cudworth N, Eliceiri KW. Hardware-software co-design of an open-source automatic multimodal whole slide histopathology imaging system. J Biomed Opt 2023; 28:026501. [PMID: 36761254 PMCID: PMC9905038 DOI: 10.1117/1.jbo.28.2.026501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Significance Advanced digital control of microscopes and programmable data acquisition workflows have become increasingly important for improving the throughput and reproducibility of optical imaging experiments. Combinations of imaging modalities have enabled a more comprehensive understanding of tissue biology and tumor microenvironments in histopathological studies. However, insufficient imaging throughput and complicated workflows still limit the scalability of multimodal histopathology imaging. Aim We present a hardware-software co-design of a whole slide scanning system for high-throughput multimodal tissue imaging, including brightfield (BF) and laser scanning microscopy. Approach The system can automatically detect regions of interest using deep neural networks in a low-magnification rapid BF scan of the tissue slide and then conduct high-resolution BF scanning and laser scanning imaging on targeted regions with deep learning-based run-time denoising and resolution enhancement. The acquisition workflow is built using Pycro-Manager, a Python package that bridges hardware control libraries of the Java-based open-source microscopy software Micro-Manager in a Python environment. Results The system can achieve optimized imaging settings for both modalities with minimized human intervention and speed up the laser scanning by an order of magnitude with run-time image processing. Conclusions The system integrates the acquisition pipeline and data analysis pipeline into a single workflow that improves the throughput and reproducibility of multimodal histopathological imaging.
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Affiliation(s)
- Bin Li
- University of Wisconsin–Madison, Center for Quantitative Cell Imaging, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
| | - Michael S. Nelson
- University of Wisconsin–Madison, Center for Quantitative Cell Imaging, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
| | - Jenu V. Chacko
- University of Wisconsin–Madison, Center for Quantitative Cell Imaging, Madison, Wisconsin, United States
| | - Nathan Cudworth
- University of Wisconsin–Madison, Center for Quantitative Cell Imaging, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Medical Physics, Madison, Wisconsin, United States
| | - Kevin W. Eliceiri
- University of Wisconsin–Madison, Center for Quantitative Cell Imaging, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Biomedical Engineering, Madison, Wisconsin, United States
- Morgridge Institute for Research, Madison, Wisconsin, United States
- University of Wisconsin–Madison, Department of Medical Physics, Madison, Wisconsin, United States
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8
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Nelson MS, Liu Y, Wilson HM, Li B, Rosado-Mendez IM, Rogers JD, Block WF, Eliceiri KW. Multiscale Label-Free Imaging of Fibrillar Collagen in the Tumor Microenvironment. Methods Mol Biol 2023; 2614:187-235. [PMID: 36587127 DOI: 10.1007/978-1-0716-2914-7_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
With recent advances in cancer therapeutics, there is a great need for improved imaging methods for characterizing cancer onset and progression in a quantitative and actionable way. Collagen, the most abundant extracellular matrix protein in the tumor microenvironment (and the body in general), plays a multifaceted role, both hindering and promoting cancer invasion and progression. Collagen deposition can defend the tumor with immunosuppressive effects, while aligned collagen fiber structures can enable tumor cell migration, aiding invasion and metastasis. Given the complex role of collagen fiber organization and topology, imaging has been a tool of choice to characterize these changes on multiple spatial scales, from the organ and tumor scale to cellular and subcellular level. Macroscale density already aids in the detection and diagnosis of solid cancers, but progress is being made to integrate finer microscale features into the process. Here we review imaging modalities ranging from optical methods of second harmonic generation (SHG), polarized light microscopy (PLM), and optical coherence tomography (OCT) to the medical imaging approaches of ultrasound and magnetic resonance imaging (MRI). These methods have enabled scientists and clinicians to better understand the impact collagen structure has on the tumor environment, at both the bulk scale (density) and microscale (fibrillar structure) levels. We focus on imaging methods with the potential to both examine the collagen structure in as natural a state as possible and still be clinically amenable, with an emphasis on label-free strategies, exploiting intrinsic optical properties of collagen fibers.
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Affiliation(s)
- Michael S Nelson
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Yuming Liu
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA
| | - Helen M Wilson
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Bin Li
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA.,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA.,Morgridge Institute for Research, Madison, WI, USA
| | - Ivan M Rosado-Mendez
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Jeremy D Rogers
- Morgridge Institute for Research, Madison, WI, USA.,McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA
| | - Walter F Block
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA
| | - Kevin W Eliceiri
- Center for Quantitative Cell Imaging, University of Wisconsin-Madison, Madison, WI, USA. .,Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, USA. .,Morgridge Institute for Research, Madison, WI, USA. .,Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, USA. .,McPherson Eye Research Institute, University of Wisconsin-Madison, Madison, WI, USA.
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9
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Kim YW, Zara G, Kang H, Branciamore S, O'Meally D, Feng Y, Kuan CY, Luo Y, Nelson MS, Brummer AB, Rockne R, Chen ZB, Zheng Y, Cardoso AA, Carlesso N. Integration of single-cell transcriptomes and biological function reveals distinct behavioral patterns in bone marrow endothelium. Nat Commun 2022; 13:7235. [PMID: 36433940 PMCID: PMC9700769 DOI: 10.1038/s41467-022-34425-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 10/25/2022] [Indexed: 11/27/2022] Open
Abstract
Heterogeneity of endothelial cell (EC) populations reflects their diverse functions in maintaining tissue's homeostasis. However, their phenotypic, molecular, and functional properties are not entirely mapped. We use the Tie2-CreERT2;Rosa26-tdTomato reporter mouse to trace, profile, and cultivate primary ECs from different organs. As paradigm platform, we use this strategy to study bone marrow endothelial cells (BMECs). Single-cell mRNA sequencing of primary BMECs reveals that their diversity and native molecular signatures is transitorily preserved in an ex vivo culture that conserves key cell-to-cell microenvironment interactions. Macrophages sustain BMEC cellular diversity and expansion and preserve sinusoidal-like BMECs ex vivo. Endomucin expression discriminates BMECs in populations exhibiting mutually exclusive properties and distinct sinusoidal/arterial and tip/stalk signatures. In contrast to arterial-like, sinusoidal-like BMECs are short-lived, form 2D-networks, contribute to in vivo angiogenesis, and support hematopoietic stem/progenitor cells in vitro. This platform can be extended to other organs' ECs to decode mechanistic information and explore therapeutics.
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Affiliation(s)
- Young-Woong Kim
- Department of Stem Cell Biology and Regenerative Medicine, Gehr Family Center for Leukemia Research, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA.
- Center for Genome Engineering, Institute for Basic Science, Yuseong-gu, Daejeon, 34126, Republic of Korea.
| | - Greta Zara
- Department of Stem Cell Biology and Regenerative Medicine, Gehr Family Center for Leukemia Research, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
| | - HyunJun Kang
- Department of Stem Cell Biology and Regenerative Medicine, Gehr Family Center for Leukemia Research, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
| | - Sergio Branciamore
- Department of Computational and Quantitative Medicine, Division of Mathematical Oncology, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
| | - Denis O'Meally
- Center for Gene Therapy, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
| | - Yuxin Feng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Chia-Yi Kuan
- Department of Neuroscience, Center for Brain Immunology and Glia (BIG), University of Virginia School of Medicine, Charlottesville, VA, 22908, USA
| | - Yingjun Luo
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
| | - Michael S Nelson
- Light Microscopy Core, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
| | - Alex B Brummer
- Department of Computational and Quantitative Medicine, Division of Mathematical Oncology, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
- Department of Physics and Astronomy, College of Charleston, Charleston, SC, 29424, USA
| | - Russell Rockne
- Department of Computational and Quantitative Medicine, Division of Mathematical Oncology, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
| | - Zhen Bouman Chen
- Department of Diabetes Complications and Metabolism, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
- Irell and Manella Graduate School of Biological Sciences, Duarte, USA
| | - Yi Zheng
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, 45229, USA
| | - Angelo A Cardoso
- Center for Gene Therapy, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA
- Irell and Manella Graduate School of Biological Sciences, Duarte, USA
| | - Nadia Carlesso
- Department of Stem Cell Biology and Regenerative Medicine, Gehr Family Center for Leukemia Research, Beckman Research Institute, City of Hope, Duarte, CA, 91010, USA.
- Irell and Manella Graduate School of Biological Sciences, Duarte, USA.
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10
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Li B, Nelson MS, Savari O, Loeffler AG, Eliceiri KW. Differentiation of pancreatic ductal adenocarcinoma and chronic pancreatitis using graph neural networks on histopathology and collagen fiber features. J Pathol Inform 2022; 13:100158. [PMID: 36605110 PMCID: PMC9808020 DOI: 10.1016/j.jpi.2022.100158] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/16/2022] [Accepted: 11/16/2022] [Indexed: 11/21/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal human cancers. However, the symptoms and radiographic appearance of chronic pancreatitis (CP) mimics that of PDAC, and sometimes the 2 entities can also be difficult to differentiate microscopically. The need for accurate differentiation of PDAC and CP has become a major topic in pancreatic pathology. These 2 diseases can present similar histomorphological features, such as excessive deposition of fibrotic stroma in the tissue microenvironment and inflammatory cell infiltration. In this paper, we present a quantitative analysis pipeline empowered by graph neural networks (GNN) capable of automatic detection and differentiation of PDAC and CP in human histological specimens. Modeling histological images as graphs and deploying graph convolutions can enable the capture of histomorphological features at different scales, ranging from nuclear size to the organization of ducts. The analysis pipeline combines image features computed from co-registered hematoxylin and eosin (H&E) images and Second-Harmonic Generation (SHG) microscopy images, with the SHG images enabling the extraction of collagen fiber morphological features. Evaluating the analysis pipeline on a human tissue micro-array dataset consisting of 786 cores and a tissue region dataset consisting of 268 images, it attained 86.4% accuracy with an average area under the curve (AUC) of 0.954 and 88.9% accuracy with an average AUC of 0.957, respectively. Moreover, incorporating topological features of collagen fibers computed from SHG images into the model further increases the classification accuracy on the tissue region dataset to 91.3% with an average AUC of 0.962, suggesting that collagen characteristics are diagnostic features in PDAC and CP detection and differentiation.
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Affiliation(s)
- Bin Li
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison 53706, WI, USA
- Morgridge Institute for Research, Madison 53705, WI, USA
| | - Michael S. Nelson
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison 53706, WI, USA
| | - Omid Savari
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh 15213, PA, USA
| | - Agnes G. Loeffler
- Department of Pathology, MetroHealth Medical Center, Cleveland 44109, OH, USA
| | - Kevin W. Eliceiri
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison 53706, WI, USA
- Morgridge Institute for Research, Madison 53705, WI, USA
- Department of Medical Physics, University of Wisconsin-Madison, Madison 53706, WI, USA
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11
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Mirzapoiazova T, Xiao G, Mambetsariev B, Nasser MW, Miaou E, Singhal SS, Srivastava S, Mambetsariev I, Nelson MS, Nam A, Behal A, Arvanitis LD, Atri P, Muschen M, Tissot FLH, Miser J, Kovach JS, Sattler M, Batra SK, Kulkarni P, Salgia R. Correction: Protein Phosphatase 2A as a Therapeutic Target in Small Cell Lung Cancer. Mol Cancer Ther 2022; 21:700. [PMID: 35373301 PMCID: PMC10996841 DOI: 10.1158/1535-7163.mct-22-0104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Egelston CA, Guo W, Tan J, Avalos C, Simons DL, Lim MH, Huang YJ, Nelson MS, Chowdhury A, Schmolze DB, Yim JH, Kruper L, Melstrom L, Margolin K, Mortimer JE, Yuan Y, Waisman JR, Lee PP. Tumor-infiltrating exhausted CD8+ T cells dictate reduced survival in premenopausal estrogen receptor-positive breast cancer. JCI Insight 2022; 7:153963. [PMID: 35132960 PMCID: PMC8855819 DOI: 10.1172/jci.insight.153963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/21/2021] [Indexed: 12/31/2022] Open
Abstract
CD8+ tumor-infiltrating lymphocytes (TILs) are associated with improved survival in triple-negative breast cancer (TNBC) yet have no association with survival in estrogen receptor–positive (ER+) BC. The basis for these contrasting findings remains elusive. We identified subsets of BC tumors infiltrated by CD8+ T cells with characteristic features of exhausted T cells (TEX). Tumors with abundant CD8+ TEX exhibited a distinct tumor microenvironment marked by amplified interferon-γ signaling–related pathways and higher programmed death ligand 1 expression. Paradoxically, higher levels of tumor-infiltrating CD8+ TEX associated with decreased overall survival of patients with ER+ BC but not patients with TNBC. Moreover, high tumor expression of a CD8+ TEX signature identified dramatically reduced survival in premenopausal, but not postmenopausal, patients with ER+ BC. Finally, we demonstrated the value of a tumor TEX signature score in identifying high-risk premenopausal ER+ BC patients among those with intermediate Oncotype DX Breast Recurrence Scores. Our data highlight the complex relationship between CD8+ TILs, interferon-γ signaling, and ER status in BC patient survival. This work identifies tumor-infiltrating CD8+ TEX as a key feature of reduced survival outcomes in premenopausal patients with early-stage ER+ BC.
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Affiliation(s)
| | - Weihua Guo
- Department of Immuno-Oncology, Beckman Research Institute
| | - Jiayi Tan
- Department of Immuno-Oncology, Beckman Research Institute
| | | | - Diana L Simons
- Department of Immuno-Oncology, Beckman Research Institute
| | - Min Hui Lim
- Department of Immuno-Oncology, Beckman Research Institute
| | | | - Michael S Nelson
- Light Microscopy Digital Imaging Core, Beckman Research Institute
| | - Arnab Chowdhury
- Division of Biostatistics, Department of Computational and Quantitative Medicine, Beckman Research Institute; and
| | | | | | | | | | - Kim Margolin
- Department of Medical Oncology & Therapeutics Research, City of Hope, Duarte, California, USA
| | - Joanne E Mortimer
- Department of Medical Oncology & Therapeutics Research, City of Hope, Duarte, California, USA
| | - Yuan Yuan
- Department of Medical Oncology & Therapeutics Research, City of Hope, Duarte, California, USA
| | - James R Waisman
- Department of Medical Oncology & Therapeutics Research, City of Hope, Duarte, California, USA
| | - Peter P Lee
- Department of Immuno-Oncology, Beckman Research Institute
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13
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Mirzapoiazova T, Xiao G, Mambetsariev B, Nasser MW, Miaou E, Singhal SS, Srivastava S, Mambetsariev I, Nelson MS, Nam A, Behal A, Arvanitis L, Atri P, Muschen M, Tissot FLH, Miser J, Kovach JS, Sattler M, Batra SK, Kulkarni P, Salgia R. Protein Phosphatase 2A as a Therapeutic Target in Small Cell Lung Cancer. Mol Cancer Ther 2021; 20:1820-1835. [PMID: 34253596 PMCID: PMC8722383 DOI: 10.1158/1535-7163.mct-21-0013] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 04/22/2021] [Accepted: 07/07/2021] [Indexed: 01/09/2023]
Abstract
Protein phosphatase 2A (PP2A), a serine/threonine phosphatase involved in the regulation of apoptosis, proliferation, and DNA-damage response, is overexpressed in many cancers, including small cell lung cancer (SCLC). Here we report that LB100, a small molecule inhibitor of PP2A, when combined with platinum-based chemotherapy, synergistically elicited an antitumor response both in vitro and in vivo with no apparent toxicity. Using inductively coupled plasma mass spectrometry, we determined quantitatively that sensitization via LB100 was mediated by increased uptake of carboplatin in SCLC cells. Treatment with LB100 alone or in combination resulted in inhibition of cell viability in two-dimensional culture and three-dimensional spheroid models of SCLC, reduced glucose uptake, and attenuated mitochondrial and glycolytic ATP production. Combining LB100 with atezolizumab increased the capacity of T cells to infiltrate and kill tumor spheroids, and combining LB100 with carboplatin caused hyperphosphorylation of the DNA repair marker γH2AX and enhanced apoptosis while attenuating MET signaling and invasion through an endothelial cell monolayer. Taken together, these data highlight the translational potential of inhibiting PP2A with LB100 in combination with platinum-based chemotherapy and immunotherapy in SCLC.
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Affiliation(s)
- Tamara Mirzapoiazova
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - Gang Xiao
- Department of Systems Biology, Beckman Research Institute, City of Hope National Medical Center, Duarte, California
- Institute of Immunology, Institute of Hematology, Zhejiang University School of Medicine, Zhejiang, China
| | - Bolot Mambetsariev
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - Mohd W Nasser
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Emily Miaou
- The Isotoparium, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California
| | - Sharad S Singhal
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - Saumya Srivastava
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - Isa Mambetsariev
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - Michael S Nelson
- The Light Microscopy and Digital Imaging Core, Beckman Research Institute, City of Hope, Duarte, California
| | - Arin Nam
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - Amita Behal
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - Leonidas Arvanitis
- Department of Pathology, City of Hope National Cancer Center, Duarte, California
| | - Pranita Atri
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Markus Muschen
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - François L H Tissot
- The Isotoparium, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California
| | - James Miser
- Department of Pediatrics, City of Hope National Medical Center, Duarte, California
| | - John S Kovach
- Lixte Biotechnology Holdings, Inc., East Setauket, New York
| | - Martin Sattler
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, Nebraska
| | - Prakash Kulkarni
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California
| | - Ravi Salgia
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, California.
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14
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Nelson G, Boehm U, Bagley S, Bajcsy P, Bischof J, Brown CM, Dauphin A, Dobbie IM, Eriksson JE, Faklaris O, Fernandez-Rodriguez J, Ferrand A, Gelman L, Gheisari A, Hartmann H, Kukat C, Laude A, Mitkovski M, Munck S, North AJ, Rasse TM, Resch-Genger U, Schuetz LC, Seitz A, Strambio-De-Castillia C, Swedlow JR, Alexopoulos I, Aumayr K, Avilov S, Bakker GJ, Bammann RR, Bassi A, Beckert H, Beer S, Belyaev Y, Bierwagen J, Birngruber KA, Bosch M, Breitlow J, Cameron LA, Chalfoun J, Chambers JJ, Chen CL, Conde-Sousa E, Corbett AD, Cordelieres FP, Nery ED, Dietzel R, Eismann F, Fazeli E, Felscher A, Fried H, Gaudreault N, Goh WI, Guilbert T, Hadleigh R, Hemmerich P, Holst GA, Itano MS, Jaffe CB, Jambor HK, Jarvis SC, Keppler A, Kirchenbuechler D, Kirchner M, Kobayashi N, Krens G, Kunis S, Lacoste J, Marcello M, Martins GG, Metcalf DJ, Mitchell CA, Moore J, Mueller T, Nelson MS, Ogg S, Onami S, Palmer AL, Paul-Gilloteaux P, Pimentel JA, Plantard L, Podder S, Rexhepaj E, Royon A, Saari MA, Schapman D, Schoonderwoert V, Schroth-Diez B, Schwartz S, Shaw M, Spitaler M, Stoeckl MT, Sudar D, Teillon J, Terjung S, Thuenauer R, Wilms CD, Wright GD, Nitschke R. QUAREP-LiMi: A community-driven initiative to establish guidelines for quality assessment and reproducibility for instruments and images in light microscopy. J Microsc 2021; 284:56-73. [PMID: 34214188 PMCID: PMC10388377 DOI: 10.1111/jmi.13041] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/16/2021] [Indexed: 11/27/2022]
Abstract
A modern day light microscope has evolved from a tool devoted to making primarily empirical observations to what is now a sophisticated , quantitative device that is an integral part of both physical and life science research. Nowadays, microscopes are found in nearly every experimental laboratory. However, despite their prevalent use in capturing and quantifying scientific phenomena, neither a thorough understanding of the principles underlying quantitative imaging techniques nor appropriate knowledge of how to calibrate, operate and maintain microscopes can be taken for granted. This is clearly demonstrated by the well-documented and widespread difficulties that are routinely encountered in evaluating acquired data and reproducing scientific experiments. Indeed, studies have shown that more than 70% of researchers have tried and failed to repeat another scientist's experiments, while more than half have even failed to reproduce their own experiments. One factor behind the reproducibility crisis of experiments published in scientific journals is the frequent underreporting of imaging methods caused by a lack of awareness and/or a lack of knowledge of the applied technique. Whereas quality control procedures for some methods used in biomedical research, such as genomics (e.g. DNA sequencing, RNA-seq) or cytometry, have been introduced (e.g. ENCODE), this issue has not been tackled for optical microscopy instrumentation and images. Although many calibration standards and protocols have been published, there is a lack of awareness and agreement on common standards and guidelines for quality assessment and reproducibility. In April 2020, the QUality Assessment and REProducibility for instruments and images in Light Microscopy (QUAREP-LiMi) initiative was formed. This initiative comprises imaging scientists from academia and industry who share a common interest in achieving a better understanding of the performance and limitations of microscopes and improved quality control (QC) in light microscopy. The ultimate goal of the QUAREP-LiMi initiative is to establish a set of common QC standards, guidelines, metadata models and tools, including detailed protocols, with the ultimate aim of improving reproducible advances in scientific research. This White Paper (1) summarizes the major obstacles identified in the field that motivated the launch of the QUAREP-LiMi initiative; (2) identifies the urgent need to address these obstacles in a grassroots manner, through a community of stakeholders including, researchers, imaging scientists, bioimage analysts, bioimage informatics developers, corporate partners, funding agencies, standards organizations, scientific publishers and observers of such; (3) outlines the current actions of the QUAREP-LiMi initiative and (4) proposes future steps that can be taken to improve the dissemination and acceptance of the proposed guidelines to manage QC. To summarize, the principal goal of the QUAREP-LiMi initiative is to improve the overall quality and reproducibility of light microscope image data by introducing broadly accepted standard practices and accurately captured image data metrics.
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Affiliation(s)
- Glyn Nelson
- Bioimaging Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Ulrike Boehm
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia, USA
| | - Steve Bagley
- Visualisation, Irradiation & Analysis, Cancer Research UK Manchester Institute, Alderley Park, Macclesfield, UK
| | - Peter Bajcsy
- National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| | | | - Claire M Brown
- Advanced BioImaging Facility (ABIF), McGill University, Montreal, Quebec, Canada
| | - Aurélien Dauphin
- Unité Génétique et Biologie du Développement U934, PICT-IBiSA, Institut Curie/Inserm/CNRS/PSL Research University, Paris, France
| | - Ian M Dobbie
- Department of Biochemistry, University of Oxford, Oxford, Oxon, UK
| | - John E Eriksson
- Turku Bioscience Centre, Euro-Bioimaging ERIC, Turku, Finland
| | | | | | - Alexia Ferrand
- Imaging Core Facility, Biozentrum, University of Basel, Basel, Switzerland
| | - Laurent Gelman
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - Ali Gheisari
- Light Microscopy Facility, CMCB Technology Platform, TU Dresden, Dresden, Germany
| | - Hella Hartmann
- Light Microscopy Facility, CMCB Technology Platform, TU Dresden, Dresden, Germany
| | - Christian Kukat
- FACS & Imaging Core Facility, Max Planck Institute for Biology of Ageing, Cologne, Germany
| | - Alex Laude
- Bioimaging Unit, Newcastle University, Newcastle upon Tyne, UK
| | - Miso Mitkovski
- Light Microscopy Facility, Max Planck Institute of Experimental Medicine, Goettingen, Germany
| | - Sebastian Munck
- VIB BioImaging Core & VIB-KU Leuven Center for Brain and Disease Research & KU Leuven Department for Neuroscience, Leuven, Flanders, Belgium
| | | | - Tobias M Rasse
- Scientific Service Group Microscopy, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Ute Resch-Genger
- Division Biophotonics, Federal Institute for Materials Research and Testing, Berlin, Germany
| | - Lucas C Schuetz
- European Molecular Biology Laboratory, Advanced Light Microscopy Facility, Heidelberg, Germany
| | - Arne Seitz
- Faculty of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Vaud, Switzerland
| | | | - Jason R Swedlow
- Divisions of Computational Biology and Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, UK
| | - Ioannis Alexopoulos
- General Instrumentation - Light Microscopy Facility, Faculty of Science, Radboud University, Nijmegen, The Netherlands
| | - Karin Aumayr
- BioOptics Facility, IMP - Research Institute of Molecular Pathology, Vienna, Austria
| | - Sergiy Avilov
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Gert-Jan Bakker
- Department of Cell Biology (route 283), Radboud Institute for Molecular Life Sciences, Nijmegen, The Netherlands
| | | | - Andrea Bassi
- Dipartimento di Fisica, Politecnico di Milano, Milan, Italy
| | - Hannes Beckert
- Microscopy Core Facility, Medizinische Fakultät, Universität Bonn, Bonn, Germany
| | | | - Yury Belyaev
- Microscopy Imaging Center, University of Bern, Bern, Switzerland
| | | | | | - Manel Bosch
- Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | | | - Lisa A Cameron
- Light Microscopy Core Facility, Department of Biology, Duke University, Durham, North Carolina, USA
| | - Joe Chalfoun
- National Institute of Standards and Technology, Gaithersburg, Maryland, USA
| | - James J Chambers
- Institute for Applied Life Sciences, University of Massachusetts, Amherst, Massachusetts, USA
| | | | - Eduardo Conde-Sousa
- i3S - Instituto de InvestigaÇão e InovaÇão em Saúde, Universidade do Porto, Porto, Portugal.,INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | | | | | - Elaine Del Nery
- BioPhenics High-Content Screening Laboratory (PICT-IBiSA), Translational Research Department, Institut Curie - PSL Research University, Paris, France
| | - Ralf Dietzel
- Omicron-Laserage Laserprodukte GmbH, Rodgau, Germany
| | | | | | | | - Hans Fried
- Light Microscope Facility, German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | - Wah Ing Goh
- A*STAR Microscopy Platform, Research Support Centre, Agency for Science, Technology and Research, Singapore, Singapore
| | - Thomas Guilbert
- Institut Cochin, INSERM (U1016), CNRS (UMR 8104), Université de Paris (UMR-S1016), Paris, France
| | | | - Peter Hemmerich
- Core Facility Imaging, Leibniz Institute on Aging, Jena, Germany
| | | | - Michelle S Itano
- Neuroscience Microscopy Core, University of North Carolina, Chapel Hill, North Carolina, USA
| | | | - Helena K Jambor
- Mildred-Scheel Nachwuchszentrum, Universitätsklinikum Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Stuart C Jarvis
- Prior Scientific Instruments Limited, Cambridge, Cambridgeshire, UK
| | - Antje Keppler
- EMBL Heidelberg, Global BioImaging, Heidelberg, Germany
| | | | - Marcel Kirchner
- FACS & Imaging Core Facility, Max Planck Institute for Biology of Ageing, Cologne, Germany
| | | | - Gabriel Krens
- Bioimaging Facility, Institute of Science and Technology Austria, Klosterneuburg, Austria
| | - Susanne Kunis
- University Osnabrueck, Biology/Chemistry, Osnabrueck, Germany
| | | | - Marco Marcello
- Institute of Systems, Molecular & Integrative Biology, University of Liverpool, Liverpool, Merseyside, UK
| | - Gabriel G Martins
- Instituto Gulbenkian de Ciencia & Faculdade de Ciencias, University of Lisboa, Oeiras, Portugal
| | | | - Claire A Mitchell
- Warwick Medical School, University of Warwick, Coventry, West Midlands, UK
| | - Joshua Moore
- Divisions of Computational Biology and Gene Regulation and Expression, School of Life Sciences, University of Dundee, Dundee, UK
| | - Tobias Mueller
- Gregor Mendel Institute of Molecular Plant Biology (GMI), Vienna, Austria
| | | | - Stephen Ogg
- Medical Microbiology & Immunology, University of Alberta, Edmonton, Alberta, Canada
| | - Shuichi Onami
- RIKEN Center for Biosystems Dynamics Research, Kobe, Hyogo, Japan
| | | | - Perrine Paul-Gilloteaux
- Université de Nantes, CHU Nantes, Inserm, CNRS, SFR Santé, Inserm UMS 016, CNRS UMS 3556, F-44000 Nantes, France
| | - Jaime A Pimentel
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Laure Plantard
- Friedrich Miescher Institute for Biomedical Research, Basel, Switzerland
| | - Santosh Podder
- Microscopy Facility, Department of Biology, Indian Institute of Science Education and Research Pune, Pune, India
| | | | | | - Markku A Saari
- Turku Bioscience Centre, University of Turku and Åbo Akademi University, Turku, Finland
| | - Damien Schapman
- UNIROUEN, INSERM, PRIMACEN, Normandie University, Rouen, France
| | | | - Britta Schroth-Diez
- Light Microscopy Facility, Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | | | - Michael Shaw
- National Physical Laboratory, Teddington, Middlesex, UK
| | - Martin Spitaler
- Imaging Facility, Max Planck Institute of Biochemistry, Martinsried, Munich, Germany
| | | | - Damir Sudar
- Quantitative Imaging Systems, Portland, Oregon, USA
| | - Jeremie Teillon
- Bordeaux Imaging Center, Université de Bordeaux, Bordeaux, Gironde, France
| | - Stefan Terjung
- European Molecular Biology Laboratory, Advanced Light Microscopy Facility, Heidelberg, Germany
| | - Roland Thuenauer
- Technology Platform Microscopy and Image Analysis, Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, Germany
| | | | - Graham D Wright
- A*STAR Microscopy Platform, Research Support Centre, Agency for Science, Technology and Research, Singapore, Singapore
| | - Roland Nitschke
- Life Imaging Center and BIOSS Centre for Biological Signaling Studies, Albert-Ludwigs-University Freiburg, Freiburg, Germany
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15
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Srivastava S, Pang KM, Iida M, Nelson MS, Liu J, Nam A, Wang J, Mambetsariev I, Pillai R, Mohanty A, McDaniel N, Behal A, Kulkarni P, Wheeler DL, Salgia R. Activation of EPHA2-ROBO1 Heterodimer by SLIT2 Attenuates Non-canonical Signaling and Proliferation in Squamous Cell Carcinomas. iScience 2020; 23:101692. [PMID: 33196021 PMCID: PMC7644594 DOI: 10.1016/j.isci.2020.101692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 08/21/2020] [Accepted: 10/13/2020] [Indexed: 12/25/2022] Open
Abstract
The tyrosine kinase receptor ephrin receptor A2 (EPHA2) is overexpressed in lung (LSCC) and head and neck (HNSCC) squamous cell carcinomas. Although EPHA2 can inhibit tumorigenesis in a ligand-dependent fashion via phosphorylation of Y588 and Y772, it can promote tumorigenesis in a ligand-independent manner via phosphorylation of S897. Here, we show that EPHA2 and Roundabout Guidance Receptor 1 (ROBO1) interact to form a functional heterodimer. Furthermore, we show that the ROBO1 ligand Slit Guidance Ligand 2 (SLIT2) and ensartinib, an inhibitor of EPHA2, can attenuate growth of HNSCC cells and act synergistically in LSCC cells. Our results suggest that patients with LSCC and HNSCC may be stratified and treated based on their EPHA2 and ROBO1 expression patterns. Although ~73% of patients with LSCC could benefit from SLIT2+ensartinib treatment, ~41% of patients with HNSCC could be treated with either SLIT2 or ensartinib. Thus, EPHA2 and ROBO1 represent potential LSCC and HNSCC theranostics.
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Affiliation(s)
- Saumya Srivastava
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Ka Ming Pang
- Department of Surgery, City of Hope National Medical Center, Duarte, CA, USA
| | - Mari Iida
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Wisconsin Institute for Medical Research, Madison, WI 53705-2275, USA
| | - Michael S. Nelson
- Light Microscopy Core, City of Hope National Medical Center, Duarte, CA, USA
| | - Jiayi Liu
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Arin Nam
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Jiale Wang
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Isa Mambetsariev
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Raju Pillai
- Department of Pathology, City of Hope National Medical Center, Duarte, CA, USA
| | - Atish Mohanty
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Nellie McDaniel
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Wisconsin Institute for Medical Research, Madison, WI 53705-2275, USA
| | - Amita Behal
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Prakash Kulkarni
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Deric L. Wheeler
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Wisconsin Institute for Medical Research, Madison, WI 53705-2275, USA
| | - Ravi Salgia
- Department of Medical Oncology & Therapeutics Research, City of Hope National Medical Center, 1500 East Duarte Road, Duarte, CA 91010, USA
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16
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Castanotto D, Zhang X, Rüger J, Alluin J, Sharma R, Pirrotte P, Joenson L, Ioannou S, Nelson MS, Vikeså J, Hansen BR, Koch T, Jensen MA, Rossi JJ, Stein CA. A Multifunctional LNA Oligonucleotide-Based Strategy Blocks AR Expression and Transactivation Activity in PCa Cells. Mol Ther Nucleic Acids 2020; 23:63-75. [PMID: 33335793 PMCID: PMC7723773 DOI: 10.1016/j.omtn.2020.10.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 10/21/2020] [Indexed: 01/05/2023]
Abstract
The androgen receptor (AR) plays a critical role in the development of prostate cancer (PCa) through the activation of androgen-induced cellular proliferation genes. Thus, blocking AR-mediated transcriptional activation is expected to inhibit the growth and spread of PCa. Using tailor-made splice-switching locked nucleic acid (LNA) oligonucleotides (SSOs), we successfully redirected splicing of the AR precursor (pre-)mRNA and destabilized the transcripts via the introduction of premature stop codons. Furthermore, the SSOs simultaneously favored production of the AR45 mRNA in lieu of the full-length AR. AR45 is an AR isoform that can attenuate the activity of both full-length and oncogenic forms of AR by binding to their common N-terminal domain (NTD), thereby blocking their transactivation potential. A large screen was subsequently used to identify individual SSOs that could best perform this dual function. The selected SSOs powerfully silence AR expression and modulate the expression of AR-responsive cellular genes. This bi-functional strategy that uses a single therapeutic molecule can be the basis for novel PCa treatments. It might also be customized to other types of therapies that require the silencing of one gene and the simultaneous expression of a different isoform.
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Affiliation(s)
- Daniela Castanotto
- Department of Medical Oncology, City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Xiaowei Zhang
- Department of Medical Oncology, City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Jacqueline Rüger
- Department of Medical Oncology, City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Jessica Alluin
- Department of Molecular and Cellular Biology, City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Ritin Sharma
- Collaborative Center for Translational Mass Spectrometry, Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Patrick Pirrotte
- Collaborative Center for Translational Mass Spectrometry, Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Lars Joenson
- Roche Innovation Center Copenhagen A/S, Fremtidsvej 3, 2970 Hørsholm, Denmark
| | - Silvia Ioannou
- Science Department, Flintridge Preparatory School, 4543 Crown Avenue, La Cañada Flintridge, CA 91011, USA
| | - Michael S Nelson
- The Light Microscopy and Digital Imaging Core, Beckman Research Institute, City of Hope, 1500 East Duarte Road, Duarte CA 91010
| | - Jonas Vikeså
- Roche Innovation Center Copenhagen A/S, Fremtidsvej 3, 2970 Hørsholm, Denmark
| | - Bo Rode Hansen
- Genevant Sciences, 245 Main Street, Floor 2, Cambridge, MA 02142
| | - Troels Koch
- Frederikskaj 10B, 2nd floor, 2450 Copenhagen SV, Denmark
| | - Mads Aaboe Jensen
- Roche Innovation Center Copenhagen A/S, Fremtidsvej 3, 2970 Hørsholm, Denmark
| | - John J Rossi
- Department of Molecular and Cellular Biology, City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
| | - Cy A Stein
- Department of Medical Oncology, City of Hope, 1500 East Duarte Road, Duarte, CA 91010, USA
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17
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Mirzapoiazova T, Pozhitkov A, Nam A, Mambetsariev I, Nelson MS, Tan YHC, Zhang K, Raz D, Singhal S, Nasser MW, Kulkarni P, Batra SK, Sattler M, Salgia R. Effects of selected deubiquitinating enzyme inhibitors on the proliferation and motility of lung cancer and mesothelioma cell lines. Int J Oncol 2020; 57:80-86. [PMID: 32236606 PMCID: PMC7252467 DOI: 10.3892/ijo.2020.5034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/19/2020] [Indexed: 11/06/2022] Open
Abstract
The post‑translational modification of proteins by ubiquitinating enzymes plays a central role in a number of cellular functions, such as cell proteolysis, DNA repair, and cell signaling and communication. Deubiquitinating enzymes (DUBs) disassemble ubiquitin chains and remove ubiquitin moieties from proteins. Targeting DUBs in cancer models has revealed an important role for these enzymes in tumorigenesis, and they therefore have emerged as attractive therapeutic targets. In the present study, the effects of three DUB inhibitors, PR‑619, RA‑9 and LDN‑91946, on a non‑small cell lung cancer cell line (A549) and a mesothelioma cell line (H2373) were investigated. PR‑619 significantly inhibited cell adhesion and the proliferation of both cell lines. RA‑9 exerted an inhibitory effect on the adhesion and proliferation of H2373 cells, whereas it had no effect on A549 cells. Notably, however, while PR‑619 attenuated the proliferation of both cell lines, it exerted an opposite effect on cell motility; in the case of A549 cells, there was a significant increase in cell motility, while for the H2373 cells, there was a significant decrease. Furthermore, protein phosphorylation kinetic analyses revealed that the effects were cell line‑specific. In H2373 cells, the phosphorylation of only one peptide corresponding to the P85A protein was significantly affected, and while LDN‑91946 treatment increased phosphorylation, treatment with RA‑9 or PR‑619 decreased its phosphorylation compared to the DMSO control. By contrast, in the case of A549 cells, the phosphorylation of 21 peptides was significantly affected by the same compounds. In light of the potential for the negative side‑effects of DUB inhibition, such as increased cancer cell motility, the data presented herein underscore the dire need for the development of specific DUB inhibitors and to elucidate the individual role of DUB family members in cancer biology before they can be specifically pharmacologically targeted.
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Affiliation(s)
- Tamara Mirzapoiazova
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
| | - Alexander Pozhitkov
- Center for Informatics, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
| | - Arin Nam
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
| | - Isa Mambetsariev
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
| | - Michael S Nelson
- The Light Microscopy and Digital Imaging Core, Beckman Research Institute, City of Hope, Duarte, CA 91010‑3000, USA
| | - Yi-Hung Carol Tan
- Section of Hematology/Oncology, Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - Keqiang Zhang
- Department of Surgery, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
| | - Dan Raz
- Department of Surgery, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
| | - Sharad Singhal
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
| | - Mohd W Nasser
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Prakash Kulkarni
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Martin Sattler
- Department of Medical Oncology, Dana‑Farber Cancer Institute, Boston, MA 02215, USA
| | - Ravi Salgia
- Department of Medical Oncology and Therapeutics Research, City of Hope National Medical Center, Duarte, CA 91010‑3000, USA
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18
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Egelston CA, Avalos C, Tu TY, Rosario A, Wang R, Solomon S, Srinivasan G, Nelson MS, Huang Y, Lim MH, Simons DL, He TF, Yim JH, Kruper L, Mortimer J, Yost S, Guo W, Ruel C, Frankel PH, Yuan Y, Lee PP. Resident memory CD8+ T cells within cancer islands mediate survival in breast cancer patients. JCI Insight 2019; 4:130000. [PMID: 31465302 DOI: 10.1172/jci.insight.130000] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/23/2019] [Indexed: 12/17/2022] Open
Abstract
CD8+ tumor-infiltrating lymphocytes (TILs) correlate with relapse-free survival (RFS) in most cancer types, including breast cancer. However, subset composition, functional status, and spatial location of CD8+ TILs in relation to RFS in human breast tumors remain unclear. Spatial tissue analysis via quantitative immunofluorescence showed that infiltration of CD8+ T cells into cancer islands was more significantly associated with RFS than CD8+ T cell infiltration into either tumor stroma or total tumor. Localization into cancer islands within tumors is mediated by expression of the integrin CD103, which is a marker for tissue-resident memory T cells (TRMs). Analysis of fresh tumor samples revealed that CD8+ TRMs are functionally similar to other CD8+ TILs, suggesting that the basis of their protective effect is their spatial distribution rather than functional differences. Indeed, CD103+ TRMs, as compared with CD103-CD8+ TILs, are enriched within cancer islands, and CD8+ TRM proximity to cancer cells drives the association of CD8+ TIL densities with RFS. Together, these findings reveal the importance of cancer island-localized CD8+ TRMs in surveillance of the breast tumor microenvironment and as a critical determinant of RFS in patients with breast cancer.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Christopher Ruel
- Department of Biostatistics, Beckman Research Institute, City of Hope, Duarte, California, USA
| | - Paul H Frankel
- Department of Biostatistics, Beckman Research Institute, City of Hope, Duarte, California, USA
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19
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20
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Rodriguez-Carreno MP, Nelson MS, Botten J, Smith-Nixon K, Buchmeier MJ, Whitton JL. Evaluating the immunogenicity and protective efficacy of a DNA vaccine encoding Lassa virus nucleoprotein. Virology 2005; 335:87-98. [PMID: 15823608 DOI: 10.1016/j.virol.2005.01.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2004] [Revised: 01/04/2005] [Accepted: 01/14/2005] [Indexed: 10/25/2022]
Abstract
Several viruses in the Arenavirus genus of the family Arenaviridae cause severe, often fatal, hemorrhagic fever. One such virus, Lassa virus (LV), is a frequent cause of disease in Africa, and survivors often are left with substantial neurological impairment. The feasibility of protective immunization against LV infection, and the associated disease, has been demonstrated in animal models, using recombinant vaccinia viruses to deliver Lassa proteins. Circumstantial evidence implicates cellular immunity in this Lassa-induced protection, but this has not been confirmed. Here, we describe DNA vaccines that encode LV proteins. A single inoculation of a plasmid encoding full-length Lassa nucleoprotein (LNP) can induce CD8(+) T cell responses in mice and can protect against challenge with two arenaviruses, lymphocytic choriomeningitis virus (LCMV) and Pichinde virus (PV). A DNA minigene vaccine encoding a 9 amino acid sequence from LNP also induces CD8(+) T cells and protects against arenavirus challenge, thus confirming prior speculation that protective cellular immunity is induced by LV proteins.
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Affiliation(s)
- Maria P Rodriguez-Carreno
- Department of Neuropharmacology, CVN-9, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA
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21
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Schwarzenbacher R, Deacon AM, Jaroszewski L, Brinen LS, Canaves JM, Dai X, Elsliger MA, Floyd R, Godzik A, Grittini C, Grzechnik SK, Klock HE, Koesema E, Kovarik JS, Kreusch A, Kuhn P, Lesley SA, McMullan D, McPhillips TM, Miller MD, Morse A, Moy K, Nelson MS, Ouyang J, Page R, Robb A, Quijano K, Spraggon G, Stevens RC, van den Bedem H, Velasquez J, Vincent J, von Delft F, Wang X, West B, Wolf G, Hodgson KO, Wooley J, Wilson IA. Crystal structure of a putative glutamine amido transferase (TM1158) from Thermotoga maritima
at 1.7 Å resolution. Proteins 2004; 54:801-5. [PMID: 14997577 DOI: 10.1002/prot.10614] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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22
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Page R, Nelson MS, von Delft F, Elsliger MA, Canaves JM, Brinen LS, Dai X, Deacon AM, Floyd R, Godzik A, Grittini C, Grzechnik SK, Jaroszewski L, Klock HE, Koesema E, Kovarik JS, Kreusch A, Kuhn P, Lesley SA, McMullan D, McPhillips TM, Miller MD, Morse A, Moy K, Ouyang J, Robb A, Rodrigues K, Schwarzenbacher R, Spraggon G, Stevens RC, van den Bedem H, Velasquez J, Vincent J, Wang X, West B, Wolf G, Hodgson KO, Wooley J, Wilson IA. Crystal structure of γ-glutamyl phosphate reductase (TM0293) from Thermotoga maritima at 2.0 Å resolution. Proteins 2003; 54:157-61. [PMID: 14705032 DOI: 10.1002/prot.10562] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Rebecca Page
- Joint Center for Structural Genomics, Scripps Research Institute, La Jolla, California 92037, USA
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23
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Levadokou EN, Freeman DA, Budzynski MJ, Early BE, McElfresh KC, Schumm JW, Amin AS, Kim YK, Sprecher CJ, Krenke BE, Silva DA, McIntosh TM, Grubb JC, Johnston LJ, Sailus JS, Ban JD, Crouse CA, Nelson MS. Allele frequencies for fourteen STR loci of the PowerPlex 1.1 and 2.1 multiplex systems and Penta D locus in Caucasians, African-Americans, Hispanics, and other populations of the United States of America and Brazil. J Forensic Sci 2001; 46:736-61. [PMID: 11373021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Affiliation(s)
- E N Levadokou
- North Carolina State Bureau of Investigation, Raleigh 27603, USA
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24
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Guttman N, Nelson MS, Zimmerman DR. When the visit to the emergency department is medically nonurgent: provider ideologies and patient advice. Qual Health Res 2001; 11:161-178. [PMID: 11221113 DOI: 10.1177/104973201129119028] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
It is estimated that more than half of pediatric hospital emergency department (ED) visits are medically nonurgent. Anecdotal impressions suggest that ED providers castigate medically nonurgent visits, yet studies on such visits are scarce. This study explored the perspectives of 26 providers working in the EDs of two urban hospitals regarding medically nonurgent pediatric ED visits and advising parents or guardians on appropriate ED use. Three provider ideologies regarding the appropriateness of medically nonurgent ED use were identified and found to be linked to particular communication strategies that providers employed with ED users: restrictive, pragmatic, and all-inclusive. The analysis resulted in the development of a typology of provider ideological orientations toward ED use, distinguished according to different orientations toward professional dominance.
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Affiliation(s)
- N Guttman
- Department of Communication, Tel-Aviv University
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25
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Nelson MS. Mental health consultations in the preschool daycare center. Child Adolesc Psychiatr Clin N Am 2001; 10:45-53, viii. [PMID: 11214419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
This article explores some of the challenges to children's emotional and social development inherent in the all-day childcare programs for children aged 3 to 5 years. The psychoanalytically oriented child development community has offered ongoing assistance, information, and support to teachers, parents, and children in preschools and preschool daycare sites in a number of communities across the country. The process and results of a long-term preschool daycare consultation are presented.
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Affiliation(s)
- M S Nelson
- TRW Foundation Early Childhood Intervention Alliance Project, Los Angeles County, California, USA
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26
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Affiliation(s)
- M S Nelson
- Stanford University School of Medicine, California, USA
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Nelson MS. Breaking silence: one woman's account of rape. Acad Med 1997; 72:982-983. [PMID: 9387821 DOI: 10.1097/00001888-199711000-00015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Abstract
Using the constitutive view of health communication as a framework, this essay explores the construction of HIV diagnoses in narratives about physician/patient interactions. Narrative analysis reveals the life-changing impact of HIV diagnosis and the incongruence of the routine ways in which most diagnoses are handled. It also highlights the importance of HIV-positive communities in the construction of HIV-positive identities. These analyses suggest a review of how all diagnoses are delivered, and a need for further exploration of the role of supportive communities in construction of identity.
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Affiliation(s)
- N L Roth
- SCILS, Rutgers University, New Brunswick, New Jersey 08901-1071, USA.
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Nelson MS, Benzinger EA, Budzynski MJ, Boodee MT, Matthews A, Buel E, Schwartz MB, von Beroldingen C, Wampler RL, Coons TM. Validation of probe EFD52 (D17S26) for forensic DNA analysis. J Forensic Sci 1996; 41:557-68. [PMID: 8754565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Validation studies that meet TWGDAM (The Working Group on DNA Analysis Methods) and CAC (California Association of Criminalists) guidelines for RFLP (restriction fragment length polymorphism) analysis were performed with the DNA probe EFD52 (D17S26). These studies demonstrate that the probe EFD52 is suitable for forensic casework. No unexpected DNA banding patterns were obtained from controlled studies examining various tissues, sample consistency over many gels, mixtures of body fluids, various substrates, various contaminants and non-human DNA sources. Of all the animal DNAs tested, only one higher primate yielded a single band to EFD52 hybridization. The sensitivity of EFD52 was shown to be comparable to that of other forensic probes. Population frequency distribution tables were prepared from over 4000 alleles and two-locus studies were conducted on nine forensically useful probes. Black, White, Hispanic and Lumbee Indian populations were found to be in Hardy-Weinberg and linkage equilibrium. Comparisons between victim blood standards and epithelial fractions of mixed strains from sexual assault cases were used to demonstrate the robustness of the EFD52 probe in forensic casework.
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Affiliation(s)
- M S Nelson
- North Carolina State Bureau of Investigation, Raleigh, USA
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Nelson MS. Revisiting ancient times. Am J Emerg Med 1996; 14:113. [PMID: 8630141 DOI: 10.1016/s0735-6757(96)90038-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Abstract
The diabetic patient is at high risk for developing long-term medical complications including serious foot problems with potential loss of limb. With today's growing awareness of the importance of curtailing overall health care costs, the importance of comprehensive diabetic patient education programs is academic. It is demonstrated that a multidisciplinary approach to diabetic care management, with foot care assessment encompassing early preventive measures, can serve as a model for other Veterans Affairs Medical Centers to follow. Foot screenings can individualize specific foot problems and provide an understanding of risk factors to prevent complications. Patients with diabetes or peripheral vascular disease and, especially those individuals at risk of foot ulceration, are referred to the appropriate clinic for ongoing management to prevent amputation. Patient education is considered most effective when it is encouraged throughout a diabetic patient's medical care, and it becomes a part of lifestyle habits.
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Nelson MS. A triage-based emergency department patient classification system. J Emerg Nurs 1994; 20:511-6. [PMID: 7745905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Abstract
BACKGROUND Although there is general agreement that the teaching of clinical procedures needs vast improvement, little appears to have been done to achieve this goal, particularly with regard to medical students. METHOD In the summer and fall of 1992, 60 U.S. medical schools participated in a telephone survey about how they taught clinical procedures to medical students. The schools were in 30 states and the District of Columbia; 36 were public and 24 were private. The schools were asked to describe what procedures were taught, how, and over what duration of time, with a focus on whether students were taught procedures prior to their clinical rotations. RESULTS More than three-fourths of the schools (47 of 60) offered nothing other than an introduction to phlebotomy. Only four schools offered more extensive courses (40-50 hours) that covered a variety of topics. CONCLUSION Few schools had adopted any formal method for training students to perform clinical procedures. In light of this problem, the authors describe a solution that has proven popular at the Stanford University School of Medicine--an elective course in surgical skills developed in 1988-89 and continuing to the present. Although the content of this particular course focuses on surgical procedures, important topics from other disciplines could easily be added or substituted. The course incorporates techniques that have previously been shown to be successful, such as the use of plastic models and cadavers. It also enables students to learn by performing procedures on each other, and to benefit from continuity of supervision by being taught by one faculty member.
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Affiliation(s)
- M S Nelson
- Stanford University School of Medicine, California
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Nelson MS. Women physicians and their spouses. Acad Med 1993; 68:356-357. [PMID: 8484845 DOI: 10.1097/00001888-199305000-00015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Nelson MS. Critical pathways in the emergency department. J Emerg Nurs 1993; 19:110-4. [PMID: 8468871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The actual development of the CP is an easy undertaking that an experienced emergency nurse can accomplish. The important points to remember are as follows: (1) include all disciplines that provide patient care in the development of the CP, (2) use realistic time frames (i.e., those currently found to be true in the emergency department, not those that are perceived to be ideal), (3) thoroughly educate the staff about the value of the CP in the emergency department, and, finally, (4) make sure that staff members know how to document variances. CPs in the emergency department give physicians and nurses common ground on which to negotiate patient care management more efficiently and effectively. They are a logical way to bring case management into the acute care setting. With the cost of ED visits continually rising, patient acuity levels increasing, and resources declining, expedient, coordinated, multidisciplinary action is crucial in giving total quality care to each patient.
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Nelson MS. Only one type of medical education. Ann Emerg Med 1992; 21:770. [PMID: 1590629 DOI: 10.1016/s0196-0644(05)82817-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Budzynski MJ, Nelson MS, Boodée MT, McClelland TB. Calcium alginate swabs. J Forensic Sci 1992; 37:686. [PMID: 1629669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Varon J, Nelson MS. "Asymptomatic" hyponatremia. Am J Emerg Med 1991; 9:521-2. [PMID: 1863309 DOI: 10.1016/0735-6757(91)90223-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Abstract
Ethical issues are becoming increasingly complicated. As with all specialties, emergency medicine has ethical dilemmas unique to the field. We describe a method for teaching students to identify and analyze ethical issues in emergency medicine. The course is designed for clinical medical students and house officers and is structured around various situations in which the students role-play. The course requires about 20 to 30 hours and covers a variety of topics from consent to treatment and confidentiality to teaching and education in the emergency department.
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Affiliation(s)
- M S Nelson
- Department of Surgery, Stanford University School of Medicine, CA
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Nelson MS, Pham KQ. A profile of BLS and ACLS instructors. Ann Emerg Med 1991; 20:176-80. [PMID: 1996801 DOI: 10.1016/s0196-0644(05)81218-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
STUDY OBJECTIVE To examine factors that motivate people to become and remain basic life support (BLS) and advanced cardiac life support (ACLS) instructors. DESIGN A questionnaire was mailed to 967 BLS and ACLS instructors. SETTING The study was performed in the San Francisco Bay Area. TYPE OF PARTICIPANTS All BLS and ACLS instructors whose names were registered with the Santa Clara County Affiliate of the American Heart Association. RESULTS Although there is room for improvement, 81% of the instructors were satisfied with their jobs. "Satisfaction in performing a valuable service" was the predominant reason they became instructors. "Lack of time" was the main factor causing people to stop teaching. CONCLUSION The majority of BLS and ACLS instructors surveyed were quite happy. The current system appears to be working in that the teachers themselves are satisfied. An accurate portrait of BLS and ACLS instructors is crucial for organizations such as the American Heart Association if they wish to attract and retain instructors.
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Affiliation(s)
- M S Nelson
- Department of Surgery, Stanford University Medical School, California
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Abstract
Teaching and retaining psychomotor skills presents problems in emergency medicine. A variety of models, including animals, plastic models, paid or unpaid volunteers, patients recently pronounced dead, and cadavers (the bodies of people who donate their bodies to science), have been developed to alleviate this problem. Practical and ethical concerns in using these models are discussed, with an emphasis on the cadaver model and on those procedures that are best taught on cadavers.
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Affiliation(s)
- M S Nelson
- Department of Emergency Services, Stanford University Hospital, CA 94305
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Abstract
Acute asthma exacerbations are common complaints in patients who present to the emergency department. A prospective, double-blinded study was designed to evaluate how frequency of dosing of an inhaled beta-agonist, metaproterenol (Alupent inhalation solution) would affect patient response, length of stay in the ED, and admission rates. Forty-one patients initially received a 0.3-mL dose of nebulized metaproterenol followed by two additional doses of either metaproterenol or saline every 20 minutes. While there was no difference in response (forced expiratory volume in one second) in patients at 30 minutes after their arrival, there was an improved response in the metaproterenol group at 60 and 120 minutes. The length of stay in the ED was approximately the same for both groups. There was no significant difference in admission rates. No increase in undesirable side effects (eg, nausea, tremor, palpitations) was seen in the metaproterenol-treated group. Frequent dosing of metaproterenol is useful in asthmatics having acute exacerbations and leads to rapid improvement without an increase in toxicity.
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Affiliation(s)
- M S Nelson
- Division of Emergency Medicine, Department of Surgery, Stanford University School of Medicine, California 94305-5239
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Nelson MS. More practice with pediatric patients? Ann Emerg Med 1989; 18:1376. [PMID: 2589708 DOI: 10.1016/s0196-0644(89)80293-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Abstract
Medical students are trained in airway management by endotracheal intubation in most medical schools. Unfortunately, little data exist examining retention, and no data exist that actually break down the steps of intubation to determine where students encounter problems. We studied 64 medical students trained to intubate as part of an American Heart Association advanced cardiac life support course and their performance two to three months after training. The rate of successful intubation (confirmed by visualization) was 70 +/- 12%. The most frequent errors during intubation were failure to check the light before intubation, use of the teeth as a fulcrum, and failure to check the cuff on the endotracheal tube. Knowledge of the most common errors will allow instructors to place greater emphasis on those areas during the initial instruction period with a focus on decreasing their occurrence in the future.
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Affiliation(s)
- M S Nelson
- Department of Surgery, Stanford University Hospital, California 94305-5239
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Nelson MS, Brillman JC. Epinephrine dosage & arrest duration. Ann Emerg Med 1989; 18:113-4. [PMID: 2910152 DOI: 10.1016/s0196-0644(89)80344-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Abstract
Bacterial vaginosis (often called nonspecific vaginitis or gardnerella vaginitis) is an incompletely understood disease whose initial diagnosis is often one of exclusion made when no trichomonads, yeast, or evidence of cervicitis is found during the initial examination of a woman complaining of a vaginal discharge. To increase the accuracy of the initial diagnosis, specific criteria were used before the clinical diagnosis of bacterial vaginosis was made. The presence of three of the following four criteria was necessary: 1) vaginal pH greater than 4.5; 2) clue cells on the saline wet mount; 3) thin, homogeneous-appearing discharge; or 4) positive potassium hydroxide "whiff test." A study on 100 consecutive women presenting to the emergency department with vaginal symptoms was done. Of those women meeting the criteria, 93% (54/58) obtained relief of their symptoms by treatment with metronidazole. Of those women not meeting the criteria, only 24% (10/42) were cured (P less than .001). The sensitivity, specificity, and total error rates of these criteria were 84, 89, and 14%, respectively.
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Affiliation(s)
- M S Nelson
- Department of Emergency Services, Stanford University School of Medicine, California
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